Conventional electrochemical cells include ordinary electrolytic cells, sealed electrolytic cells, traditional five-port electrolytic cells, and PTFE electrolytic cells. If the measurement needs to be carried out in a certain gas atmosphere or an oxygen-free environment, a sealed electrolytic cell must be used and equipped with air inlet and outlet pipes.
The sealed electrolytic cell is composed of a high borosilicate glass cell body and a PTFE cover. The tank body and the cover are connected by threads, and the fluorine rubber O-ring is embedded in the cover at the connection. The sealed electrolytic cell generally has three sealed electrode holes and two sealed air holes, all of which are sealed and fixed by sealing screws and fluorine rubber O-rings. The lower glass tank body can also be customized into a double-jacketed glass type according to the temperature control requirements. It is connected to the outer tank body through the hose of a peristaltic pump or a circulating pump. The liquid circulates in the glass jacket layer。 Relying on the exchange of cold and heat to achieve the effect of cooling or heating the electrolyte solution.
The volume of the electrolytic cell should be selected moderately. If the volume is too large, the amount of solution will be too much, which is unnecessary. During electrochemical measurement, the electrode surface undergoes oxidation and reduction reactions, and some substances in the solution are reduced by participating in the electrode reaction. At the same time, some reaction products will dissolve into the solution. If the volume of the electrolytic cell is too small, the solution concentration will change significantly during the long-term steady-state measurement, which will eventually affect the experimental results. In most cases, the volume of 50ml and 100ml are more choices.
The material of the electrolytic cell must have good stability. In general, high borosilicate glass is widely used to make electrolytic cells of various shapes because of its good chemical stability, wide use temperature, high transparency and processing performance. The electrolytic cell made of glass is very stable in most inorganic electrolyte solutions and organic electrolyte solutions. At the same time, considering the use requirements of some special electrolyte systems and special shapes, PTFE, plexiglass, PEEK materials and various types of metal materials can also be used as preparation materials for electrolytic cells.
Product Includes: 1 * PTFE lid 1 * chamber 6 * electrode hole sealing screw 4 * gas hole sealing screw 1 * PTFE tube φ3mm 15 * fluorine rubber O-ring
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